Ventilator.



A. H. LUIVHVI.

VENTILATOR APPLICATlON FILED AUG.20. 1911.

Patented. Jan. 22, 1918.

2 SHEETS-SHEET I.

' A. H.-LUMM.

' vemmmon. APPLICATION FILED AUG-20. 1917.

r, Patented Jan,22,1918.

2 SHEETS-SHEET 2.

ALBERT H. LUMM, or romeo, oino.

VENTILA'IOR.

Specification of Letters Patent.

Patented Jan.22,191@.

Application filed August 20, 1917. Serial No. 187,218.

. To all whom it may concern:

Beit known that I, ALBERT H. LUMM, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have invented certain new and useful Improvements in Ventilators; andI- do declare the following to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to certain new and useful improvements in ventilators which are designed to be used in connection with chimneys, vent pipes and the like.

The primary object of the invention is to provide a ventilator which is normally maintained in closed position, but which opens automatically when there is a draft through the chimney or vent pipe and which further is closed on the windward side when the wind blows to prevent a back draft down the chimney or vent pipe.

Another object of the invention is to provide a device of this character which will be extremely simple, strong, durable and inexpensive in construction, efficient and reliable in operation and well adapted to the purpose for which it is designed.

With these and numerous other objects in view, the invention consists of certain novel features of construction, and the combination and arrangement of parts as will be hereinafter fully described and claimed.

.In the accompanying drawings forming a part of the application and in which similar reference characters vare used to designate like parts throughout several views:

Figure 1 is a side elevation of a ventilator constructed in accordance with this invention; v

Fig. 2 is a vertical sectional view of the ventilator, the said view being taken on the plane indicated by the line 2-2 of Fig. 1;

Fig. 8 is a horizontal sectional view of the ventilator taken on the plane indicated by the line 3-3 of Fig. 2 and Fig. 4;, is a perspective view partly broken away and in section of a portion of the ventilator, the crown or dome thereof being removed.

Referring more particularly to the drawings, the numeral 1 designates a housing or air chamber which is here shown of hexagonal shape, but which may be provided with any number of sides. The housing 1 is constructed from a rectangular piece of sheet metal, said piece of sheetmetal being bent in a number of places to form the sides 2 vof the housing. Arranged in each of the sides 2 of the housing is a window or opening 3, the vertical side edges of which are bent laterally inwardly to form casings 4: for the windows. If desired the inner edges of the casings 4 may be bent laterally toward each other as shown in 5.

The reference numeral 6 designates a strip of angle metal which is bent into hexagonal shape to conform to the shape of the housing and which has the upper edge of its vertically disposed portion crimped over and around the upper edge of said housing as clearly shown at 7 in the drawings. Soldered to this strip of angle metal 6 is a cone shaped crown or dome 8. This closes the top of the housing and aids in preventing rain, snow, and the like from gaining entrance into thesam-e. The inner edge of the horizontallydisposed portion ofthe angle metal 6 isstruckdownwardly as shownat 9. A- similar piece of angle metal 10 is arranged at the lower edge of the housing 1.

The reference numeral 11 designates a flue tube or draft pipe which is adapted to be fixed on the chimney or vent pipe in any suitable manner, and which is secured to the lower end of the housing 1 by means of a plurality of radially disposed arms 12, one of the ends of said arms being secured to the tube 11 while their other arms are secured to the housing. The tube 11 is of less diameter than the distance between the opposite sides of the housing 1, and hence a space between the sides of the housing and the wall of the tube is provided. It is to be understood that air may pass through this space into the housing and. cause a draft up the tube. 11 and through the chimney or vent shifting.

opposite ends of the rods orpins 14 abut against the above mentioned forms 13 and prevent said, rods or These rods or pins 14 form the pivots or hinges for a series of shutters 15, said'shut ters being preferably formed of thin sheet metal, preferably aluminum, and have their upper edges rolled or curved around the pins or rods The shutters 15 are curved or bulged outwardly as clearly shown by the drawings, and they have their lower edges overlapping the upper edges of the adjacent 'upon' a chimney orother vent pipe.

shutters so that, the shutters swing outwardly.

In-using the device the ventilator is placed Nor- ' mally when there is no air stirring outside of the ventilatorand there is no draft within the flue pipe then the shutters 15 are closed. -However, when any air passes through the space formed between the flue pipe 11 and the sides 2 of the housing 1, then the shutters 15 will be automatically swung outwardly. This same action will take pla'ce if there is a draft through the chimney. The outward curvature of the shutters is such that very little draft'is required to open the same. Whenever the wind blows,

. .the shutters on the windward side will be forced by the wind into closed position while those on the leeward side will not be'aflected.

'Hence a perfect draftthrough the ventilator will be .at all times maintained and there is insurancefagainst back drafts.

From the'foregoing descrlptlon taken in connection'with the drawings, the-construe tion, use, and operation of the device will be readily understood without a more extended explanation.

As various changes in form, proportion, and in the minor details of construction may beresortedtowithoutdepartingfromthespirit ofthisinvention, it'is to be understood that I do not wish to be limited to the construction herein shown-and described other than f as claimed.

7 Copies of this patent may be obtained for "Iclaini- 7 1. Aventilator of the class described compins from longitudinal prising a housing closed at its top and open at its bottom and provided with a window, and an outwardly swinging shutter hinged at its upper edge on a horizontal pivot in said window, said shutter being bulged outwardly to adapt it to be opened by the draft passing into said housing through the open lower end of the same.

2. A ventilator of the class described comprising a housing closed at its top and open at its bottom and provided with a plurality of windows, and a series of outwardly swinging overlapping shutters hinged on horizontal pivots in each of said windows, said shutters bemg normally disposed in closed positionand. being bulged outwardly to cause trunnions projecting through said window casings and having their ends abutting against said forms to prevent them from shifting longitudinally.

l. A ventilator of the class described comprising a hollow housing provided with -w1ndows, strlps of angle material having one of their portions crimped around the upper and lower edges of said housing, a crown for said housing secured to the strip of angle material. which is disposed at the top of the same, and shutters for said windows.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

I ALBERT I-l. LUMM.

Witnesses:

THOMAS R. MANTON. MARGARET HoLs'r.

five cents each, by addressing the Commissioner of latents, Washington, D. G. 

